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UNITED STATES PATENT OFFICE.

EDWIN ROBERT WETHERED, OF LONDON, ENGLAND.

CARRIAGE-WINDOW.

SPEOIFIGATION forming part of Letterslatent No. 567,427, dated September 8, 1896. Application filed June 24,1896. Serial No. 596,760. Gin modeld Patented in England September-20,1893, No.17,fl69.

To all whom it may concern:

Be it known that I, EDWIN ROBERT Wern- ERED, asubject of the Queen of Great Britain, residing at London, England, have invented new and useful Improvements in and Connected with the Windows of Railway and other Carriages, (for which I have obtained a patent in Great Britain, No. 17,669, dated September 20, 1893,) of which the following is a specification.

This invention relates to improvements in and-connected with the windows of railway and other carriages, and has for its object to provide more efficient and simple means than those heretofore employed for retaining the sashes of such windows in an y required position.

According to my invention 1 provide the door of the railway or other carriage in which the window slides with a frame carryingtwo rollers, over which the strap for raising the The inner roller, which can r tote on a central axis, is employed as the usual guide-roller. The axis of the outer roller is eccentric, and the said roller is so arranged that when the sash-strap is allowed to rest on it the weight of the window to which the lower end of thesaid strap is fixed draws the strap inward, causing the eccentric roller to rotate on its axis and so nip the strap against the upper part of the frame. It will be obvions that the eccentric roller can be replaced, for instance, by a. smell roller or pin adapted to slide in inclined slots in the sides of the frame. In this case the weight of the sash on the end of the strap pulls the roller or pin up the inclined slot and so causes the strap to be nipped against the upper part of the frame.

In the accompanying drawings, Figure l is afront elevation of a carriage-door having my improvements applied thereto. Fig. 2 is a vertical section of .the same. Fig. 3 is a vertical section of my cam-roller device drawn to a larger scale. Fig. 4 is afront elevation, drawn to a larger scale, of the roller and inclined-slot modification; and Fig. 5 is a section on the line 5 5 of Fig, 4.

a is the carriage-door, and b is the window which slides therein. 0 is the strap fixed to the bottom of the sash or window in the orvided with lateral projections or sides ff and an upper part or cover g.

h is the'inner roller, the axis-pinj of which is central, and j is the roller mounted eccentrics-11y on its axis-pin k. The longer radius of the roller '5 is situated above the axis-pin 71:, so that when the said roller is rotated inward the upper part of its periphery moves toward the cover g of the frame. It will be obvious that when the free end of the strap 0 is grasped and pulled the roller j is allowed to drop on its axis, so as to recede from the cover g of the frame into the position shown in dotted lines in Fig. 3, thereby releasing the strap and allowing the sash to be operated. lrVhcn, however, the pull on the free end of the strap is removed, the frictionof the strap on the roller causes it to again move upward and nip the strap between its upper periphery and the upper part 9 of the frame, as shown clearly in Figs. 2 and 3, whereby thewinclow-is held in position.

In the arrangement shown in Figs. 4 and 5 the eccentric roller is replaced by a roller 3', which is mounted ininclined slots l l in the sides ff of the frame d. The action of this arrangement is the same as that of the preceding, that is to say, when the free end of the strap is grasped and pulled therollerj is allowed to move downward in the inclined slots 1, thereby releasing the grip on the strap 0 and enabling the window to be raised or lowered asdesired. 0n removing the pullon the free end of the strap 0 and allowing the strap to rest on the roller j the weight of the windowpulls the strap downward and the friction of the strap on the rollerj carries it upward in the slots l, so as to nip the strap, as shown in Fig. 5.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. The combination with the sliding sash of a railway or other carriage window, ofa frame having a guide-roller for the sash-strap and another roller over which the. said strap the mid mum and Halal: is and: w nip mmnm mm mumm I M 1M mm! min the top of film said (mum. m

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o! a railway or other carriage window of a Witnesses:

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frame having; gulda'mfior for the aashmtrap Joan E. lmmwwu'.

and a roller whieh slides in inclined ulols lu 

